George schmidt



@uiten tatrs atrn @Hirn i GEORGE SCHMIDT, OF DOBBS FERRY, NEW YORK.

Letters .Patent Nm 66,522, dated July il, 1867.

IMPROVBD PIANO-PORTE STOOL.

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TO ALL WHOM IT MAY CNCERN:

-Be it known that I, GEORGE SCHMIDr, of Dobbs Ferry, Westchester county, State of NewYork, have invented certain new and useful improvements in Piano-Forte Stools; andI dol hereby declare that thc following is a full description of the same. .i

The nature of my invention consists in combining and arranging with the seat of a piano-forte stool one or more springs,so as to make the seat self-elevating in the pedestal or frame on'unhich it is supported without vthe intervention of arscrew, as commonly used. v l l But to describe my invention more particularly I will refer to the accompanying drawings forming a part of this invention, the same'letters of reference, whenever they occur, referring to like parts.

Figure luis a side elevation of the stool.

Figure 2 is aplan view of the frame ofthe stool through the line :v a', fig. l.

Figure 3 is a vertical section ofthe stool through the line :r2 xiig. 1-.

Figures 4 hud 5 are detached views of the adjustableleg of the stool and a section of the stool-frame into which the leg is inserted.

Letter A is the seat, having attached to the under side of it a spindle, B. In the sides of this spindle are grooves '0, the object of which is to keep the seat from rotating on the spindle,.in consequence of the grooves engaging in tongues D projecting from the edges of a centre plate, E, secured upon the frame F, and forming the head or covering to the case or sheath G in which the spindle is concealed. When a piano-forte stool is made with a singlepillar, then it serves the purpose of a sheath, but when the seat is used in combination with a frame having four legs, then the sheath is made of only suieient length to give support to the seat.' This is done by meansvof a binding-screw, H, inserted through the side ofthe sheath, and the point of it, engaging into holes I formed in the side of the spindle, and thus holding the seat at any fixed elevation required. For the purpose of making the seat self-elevating a spiral spring, J, is secured upon the spindle, so as to rest on the centre plate E. The operation of it will be obvious, that as soon as the binding-screw is withdrawn from ,the detent holes in the spindle the seat will at once rise to an'y height desired.l It will be obvious that one or more springs can be arranged on the frame if deemed necessary,'but as 'a' general rule I consider one central spring sufiicient. It will also be obvious that the spiral' spring may be concealed in the sheath, but do not consider any suchA modifications of the application of the spring for making a self-elevating seat for pianoforte stools as a departure from my invention. The frame of the sto'ol is made of any suitable material and size required, and, in contradistinction to the single-eolumn piano-forte stools, has four legs, K, for the purpose of giving 'the requisite amount of steadiness to a large-seated piano-forte stool. TheseA legs are secured in the corners of the lframe by screw-threads cut on their upper ends, or by any other equivalent means. The object" of this method of securing the legs to thev frame is to obviate a very serious diiiiculty against the introduction into use of fourposted piano-forte stools, (though constantly sought often) on account of the cost of transportation if boxed up, and .if not boxed up the great risk of breaking off the legs. Making the legs so that they may be detached from the frame will entirely overcome these and other objections,and introduce into use a new and useful improvement in the manufacture of piano-forte stools never before iused.

Having now described my invention, I will proceed to .s et forth what I claim and desireto secure by Letters A:Patent of the United States.

l As the seats of piano-forte stools have been generally 'elevated by a screw, and as my invention is designed to overcome the objections to the use of a screw for such purposes,pby makingthe seat-self-elevating by means ofga spring and vertically-operating spindle, I therefore disclaim all use of the screw as a means of elevating the seat of a piano-forte stool; but what I do claim is l The combination of the seat A., spindle B, with a groove VC in it, and spiral-spring J, with the centre plate E, having a tongue, D, thereon, and frame F, as hercinbefore set forth forthe'purposes hereinbefore described.

v GEORGE SCHMIDT.

Witnesses:

` C. L. BARRETT,

FRANKLIN Barnum. 

